PicoScope 7 Automotive
Available for Windows, Mac, and Linux, the next evolution of our diagnostic scope software is now available.
What is your data source ??technical data advises that the voltage supply should be 5V at pin 1, it is, and pin 2 should be 0V, it is, and pin 3 should be 4.3V, it isn't, actually it reads as low as 1.7V
and when I gave them the part number they kept telling me it is a map sensor, which it is not
Is it a diesel ?? How have you deduced it is over fuelling ??because it seems to be over fueling
Lots to do and test before you get the evidence to confidently condemn any component, least of all the ECM.
does it sound like an ECM type problem
See next post I enteredSTC wrote:Hi Tech
A whole lot of stuff not making sense. Could you post details of the car. Year, Engine Code, VIN, Reg No.
DDE suggests it is a diesel, is it ?
Yes it is a diesel
What is your data source ??technical data advises that the voltage supply should be 5V at pin 1, it is, and pin 2 should be 0V, it is, and pin 3 should be 4.3V, it isn't, actually it reads as low as 1.7V
Autodata
and when I gave them the part number they kept telling me it is a map sensor, which it is not
let us put that on the back burner for now,
Is it a diesel ?? How have you deduced it is over fuelling ??because it seems to be over fuelingLots to do and test before you get the evidence to confidently condemn any component, least of all the ECM.
Blue smoke from the exhaust and a very strong smell
does it sound like an ECM type problem
Can you describe the smell please, blue smoke would be an indicator of burning oil - Rings, Turbo, Stem Seals ......Blue smoke from the exhaust and a very strong smell
Is AD asking for you to measure it unplugged ? but you are back probing with it connected ??technical data advises that the voltage supply should be 5V at pin 1, it is, and pin 2 should be 0V, it is, and pin 3 should be 4.3V, it isn't, actually it reads as low as 1.7V
I'll try and reply again.STC wrote:Hello again Tech
Year & Engine code would help us a lot. The ability to look at correct technical data for that car. Can you send me the Vin, by PM if you wish.
Can you describe the smell please, blue smoke would be an indicator of burning oil - Rings, Turbo, Stem Seals ......Blue smoke from the exhaust and a very strong smell
Pull the turbo / intake / intercooler pipes off and look for oil.
Unlike a petrol you cannot overfuel a diesel, it has an unrestricted supply of air hence more fuel will just raise rpm.
Can you do a quick relative compression test (start disabled) Channel B on Rail Pressure, C on Low pressure Sensor? What do you have for smooth running values / injector correction ... ?
Is AD asking for you to measure it unplugged ? but you are back probing with it connected ??technical data advises that the voltage supply should be 5V at pin 1, it is, and pin 2 should be 0V, it is, and pin 3 should be 4.3V, it isn't, actually it reads as low as 1.7V
Andrew.according to auto data injector nozzle opening pressure is 250 bar
On AD, there are 2 variations for that Reg No, the first one distinctly shows 2 fuel pumps - just to add to the confusion.only a low pressure supply pump on the side of the fuel tank along with the filter.